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Diagnostic Messages

Cause Code Settings

Appendix C242

Cause Code Settings

X.25 automatically resets (silently forces) the network-generated cause

code of CLEAR or RESET REQUEST packets to comply with the

applicable CCITT X.25 Recommendation.

• 1980 – The cause is silently forced to zero.

• 1984 – The cause is left at zero or OR'ed with 128 if it is not zero.

• 1988 – The cause is left at zero or OR'ed with 128 if it is not zero.

X.25 does not guarantee that the cause, diagnostic, facility, or clear user

data fields of a CLEAR REQUEST or a RESET REQUEST are delivered

to the remote destination because these fields may be altered by the

network, the X.25 implementation (under certain circumstances) or both.

In particular, X.25 discards the clear user data and facility fields of a

CLEAR REQUEST when the facility field is found to be invalid for the

given system configuration or when any other error occurs. When an

error occurs on a CLEAR REQUEST, the cause and diagnostic fields

delivered to the network are silently set according to the error.

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HP CommonIO Products Bedienungsanleitung Seite 242